The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1943
Hash: 164b0ce376e14eb6308b2d710fda2c9e8d4fef1433b5d79c2297937406ed732c
Previous block: 2054883f57085de98d7c2baca75f63a7fd753ca74328ef3319e10880c4dba171
Next block: 2404154000f0cda58241511c1fe9586d1400436e1eb2c12b3af2a49abc9cab3a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159247
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9369e59c9075c4aff9ae08179694c4fee217ec4d355848b2a0f3d7e5f1674b1f
Median time: 1719159246
Difficulty: 4.656542373906925e-10
Confirmations: 301
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f30
Bits: 207fffff